Digital Commons Network^™

Public Acceptance Of Guidance And Regulations For Space Flight Participation, Cory Trunkhill, Robert Joslin, Joseph Keebler

Journal of Aviation Technology and Engineering

Space flight participants are not professional astronauts and not subject to the rules and guidance covering space flight crewmembers. Ordinal logistic regression of survey data was utilized to explore public acceptance of current medical screening recommendations and regulations for safety risk and implied liability for civil space flight participation. Independent variables constituted participant demographic representations while dependent variables represented current Federal Aviation Administration guidance and regulations. Odds ratios were derived based on the demographic categories to interpret likelihood of acceptance for the criteria. Significant likely acceptance of guidance and regulations was found for five of twelve demographic variables influencing public …

Simulating Electrified Powertrain Noise And Vibration Measurement Signals For Machine Learning Based Fault Diagnosis Applications, Joohyun Lee, Yangfan Liu, J Stuart Bolton, Patricia Davies

Publications of the Ray W. Herrick Laboratories

Machine learning classification is a common method for vehicle noise and vibration (N&V) fault diagnosis which helps improve vehicle safety, comfort, and reduce maintenance cost. To improve the accuracy of classification, the model requires sufficient training data which is often expensive and time-consuming to acquire. A possible solution to resolve this limitation is to extract representative features from measurement signals and generate realistic simulated signals based on a smaller set of high-quality N&V measurement signals. A method to simulate N&V measurement signals of rotating machineries such as electrified powertrains is proposed. In its feature extraction process, tonal and broadband components …

Downstream Effects: Impact Of Antibiotic Pollution On An Aquatic Host-Parasite Interaction, Hannah G. Melchiorre, Stephanie O. Gutierrez, Dennis J. Minchella, Jing Trevor Vannatta

Purdue University Libraries Open Access Publishing Fund

The global increase in antibiotic use has led to contamination of freshwater environments. Despite the identified impacts of antibiotics on humans and wildlife, the effect of antibiotics on host–parasite life cycles in freshwater is relatively unexplored. In the current study, we utilize the trematode parasite Schistosoma mansoni, and its snail intermediate host, Biomphalaria glabrata, to investigate the influence of an ecologically relevant antibiotic concentration on the life history characteristics of both parasite and host. Our results demonstrate that antibiotics not only accelerate parasite development time, but also increase host reproduction and delay parasite-induced host castration. Using a mathematical …

Closing Thoughts, Mark Lundstrom

American Journal of Rising Scholar Activities

No abstract provided.

Improving Communication And Pilot Safety: Understanding Asr Systems And Their Inherent Biases, Mackenzie Richards

American Journal of Rising Scholar Activities

The Partnership to Enhance General Aviation Safety, Accessibility and Sustainability (PEGASAS) is a Federal Aviation Administration (FAA) Center of Excellence for General Aviation. The mission of PEGASAS is to enhance general aviation safety, accessibility, and sustainability by partnering the FAA with a national network of world-class researchers, educators, and industry leaders. Weather information devices currently used in the general aviation aircraft market are highly advanced and provide detailed and timely meteorological information to pilots. Upon its introduction, it was expected that this technology would lead to a decrease in weather related accidents, but that has not been the case. When …

Technological Innovations And Design Thinking For Policing And Social Justice, Kiera Edwards

American Journal of Rising Scholar Activities

The outcome of interactions between police and citizens is widely held to vary according to the identity of the individual being questioned. This has been a recognized as an issue in law enforcement for some time. This paper will review information on new hard and soft policing technologies and strategies that are designed to reduce the possibilities of police-citizen interactions taking a turn for the worse. In addition to various non-lethal technologies, Artificial Intelligence is often viewed as a potential means of eliminating bias in police interactions. While the literature seems to show some potential for this technology, the end …

Hydrogen Embrittlement In Martensitic Stainless Steels And Dual Phase Steels, Britney Bailey

American Journal of Rising Scholar Activities

Hydrogen embrittlement is a phenomenon of hydrogen diffusion into a metal alloy that can cause it to become brittle and fracture. Embrittlement is a critical issue in advanced high strength steels, such as martensitic stainless steels (MSS) and dual phase steels (DPS), and hence, it is necessary to understand this phenomenon to avoid premature material failure under similar conditions. The goal of the current research is to study the changes in the mechanical properties of these steels following the introduction of hydrogen. Samples in this study were cut and polished to conduct hardness measurements before and after electrochemical hydrogen charging. …

The Future Of Mobility-As-A-Service: Trust Transfer Across Automated Mobilities, From Road To Sidewalk, Jacob G. Hunter, Elise Ulwelling, Matthew Konishi, Noah Michelini, Akhil Modali, Anne Mendoza, Jessie Snyder, Shashank Mehrotra, Zhaobo Zheng, Anil R. Kumar, Kumar Akash, Teruhisa Misu, Neera Jain, Tahira Reid

School of Mechanical Engineering Faculty Publications

While trust in different types of automated vehicles has been a major focus for researchers and vehicle manufacturers, few studies have explored how people trust automated vehicles that are not cars, nor how their trust may transfer across different mobilities enabled with automation. To address this objective, a dual mobility study was designed to measure how trust in an automated vehicle with a familiar form factor—a car—compares to, and influences, trust in a novel automated vehicle—termed sidewalk mobility. A mixed-method approach involving both surveys and a semi-structured interview was used to characterize trust in these automated mobilities. Results found that …

Identification Of Novel Anti-Amoebic Pharmacophores From Kinase Inhibitor Chemotypes, Lori Ferrins, Melissa J. Buskes, Madison M. Kapteyn, Hannah N. Engels, Suzanne E. Enos, Chenyang Lu, Dana M. Klug, Baljinder Singh, Antonio Quotadamo, Kelly Bachovchin, Westley F. Tear, Andrew E. Spaulding, Katherine C. Forbes, Seema Bag, Mitch Rivers, Catherine Leblanc, Erin Burchfield, Jeremy R. Armand, Rosario Diaz-Gonzalez, Gloria Ceballos-Perez, Raquel Garcia-Hernandez, Guiomar Perez-Moreno, Cristina Bosch-Navarrete, Claudia Gomez-Linan, Luis Miguel Ruiz-Perez, Francisco Gamarro, Dolores Gonzalez-Pacanowska, Miguel Navarro, Kojo Mensa-Wilmot, Michael P. Pollastri, Dennis E. Kyle, Christopher A. Rice

Purdue University Libraries Open Access Publishing Fund

Acanthamoeba species, Naegleria fowleri, and Balamuthia mandrillaris are opportunistic pathogens that cause a range of brain, skin, eye, and disseminated diseases in humans and animals. These pathogenic free-living amoebae (pFLA) are commonly misdiagnosed and have sub-optimal treatment regimens which contribute to the extremely high mortality rates (>90%) when they infect the central nervous system. To address the unmet medical need for effective therapeutics, we screened kinase inhibitor chemotypes against three pFLA using phenotypic drug assays involving CellTiter-Glo 2.0. Herein, we report the activity of the compounds against the trophozoite stage of each of the three amoebae, ranging from …

Environment Knowledge-Driven Generic Models To Detect Coughs From Audio Recordings, Sudip Vhaduri, Sayanton V. Dibbo, Yugyeong Kim

Purdue University Libraries Open Access Publishing Fund

Goal: Millions of people are dying due to respiratory diseases, such as COVID-19 and asthma, which are often characterized by some common symptoms, including coughing. Therefore, objective reporting of cough symptoms utilizing environment-adaptive machine-learning models with microphone sensing can directly contribute to respiratory disease diagnosis and patient care. Methods: In this work, we present three generic modeling approaches - unguided, semi-guided, and guided approaches considering three potential scenarios, i.e., when a user has no prior knowledge, some knowledge, and detailed knowledge about the environments, respectively. Results: From detailed analysis with three datasets, we find that guided models are …

A Textile Architecture-Based Discrete Modeling Approach To Simulating Fabric Draping Processes, Qingxuan Wei, Dianyun Zhang

Purdue University Libraries Open Access Publishing Fund

Fabric draping, which is referred to as the process of forming of textile reinforcements over a 3D mold, is a critical stage in composites manufacturing since it determines the fiber orientation that affects subsequent infusion and curing processes and the resulting structural performance. The goal of this study is to predict the fabric deformation during the draping process and develop in-depth understanding of fabric deformation through an architecture-based discrete Finite Element Analysis (FEA). A new, efficient discrete fabric modeling approach is proposed by representing textile architecture using virtual fiber tows modeled as Timoshenko beams and connected by the springs and …

Continuing Education At Purdue University, 1975–2019, Thomas Robertson, Michael Eddy

Continuing Education

Continuing Education at Purdue University, 1975–2019 is intended to provide a follow-up to the monograph written by Dr. Frank K. Burrin after his retirement as director of Purdue Continuing Education in 1984, Continuing Education at Purdue University: The First Hundred Years (1874–1974). Burrin became ill shortly after his retirement, and he was not able to complete his project. His notes were later compiled, edited, and published by Elizabeth Boyd Thompson.

This monograph presents forty-five years of the history of Continuing Education and Conferences at Purdue under the leadership of eight deans and directors.

Design And Optimization Of Lightweight Porous Damping Treatments, Yutong Xue, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

Here, it is shown that properly-designed limp porous materials such as fibrous layers can provide damping equivalent to conventional viscoelastic dampers while providing advantages such as light weight and effective sound absorption. This then allows porous layers to be used as multi-functional noise and vibration control solutions in automotive and aerospace applications. It has also been found that the addition of bulk elasticity to the solid phase of the porous medium is beneficial since it improves damping performance compared to equivalent limp treatments. In this study, porous media, such as fibers and foams, were designed to serve as treatments for …

Stories Of Leadership: Leading With Empathy Through The Covid-19 Pandemic, Jennifer S. Linvill, Gloria O. Onosu

Purdue University Libraries Open Access Publishing Fund

Leader–follower interactions during times of complexity are critical in managing rapid change demands and ensuring organizational sustainability. Between early 2020 and 2023, many organizations worldwide witnessed an unprecedented need for organizational change that rapidly transformed the work environment. This study focused on understanding the contexts of leader and follower interactions during times of change using the shifting organizational landscapes of the COVID-19 pandemic. Applying a qualitative methodology, we collected data from 12 leaders across multiple business sectors in Africa, Asia, and the United States using semi-structured interviews. We then transcribed the interviews and applied an iterative phronetic approach to analyze …

Estimating A Model Of Forward-Looking Behavior With Discrete Choice Experiments: The Case Of Lifetime Hunting License Demand, Yusun Kim, Carson Reeling, Nicole Olynk Widmar, John G. Lee

Department of Agricultural Economics Faculty Publications

Sales of deer licenses, one of the most important revenue sources for wildlife management at the Indiana Department of Natural Resources (IDNR), have been declining for a decade. To increase its revenue, the IDNR is considering introducing a new lifetime deer license for sale. This license would allow hunters to harvest deer (and possibly other species) each year for the rest of their lives in exchange for a relatively large up-front fee. The forward-looking nature of the decision to buy a lifetime license means hunters' choice behavior is necessarily dynamic. Prior work estimates preferences for long-lived, durable goods using standard …

Don’T “Just Google It”: Deweyan Perspectives On Participatory Learning With Online Tools, Eric Thomas Weber, Heather Cowherd, Mia Morales

Education and Culture

John Dewey argued that for education to be democratic, it is important for students to be not merely spectators but also participants in learning. Teachers sometimes find personal computing devices to be distracting or to contribute to passivity rather than activity in the classroom. In this essay we examine the question of whether a student’s Google search on a subject matter discussed in class is participatory or passive. We argue that with proper guidance students’ use of online searches and related tools can empower students democratically as sources of ideas, conceptualizations, information, and insight while emphasizing participation in deliberation and …

Information And Communications Technologies And Democratic Education: Lessons From John Dewey's Pragmatism, Jonathan Flowers

Education and Culture

This essay applies lessons from John Dewey’s theory of democracy and democratic education to the modern development of information communications technologies and the assertion that the development of such technologies will lead to a more open, more democratic society. Given the continuity of the technology and its applications with structures of oppression within modern society, any attempt to resolve or democratize technology through skills-based training is bound to fail, as this does not resolve the cultural habits that enable oppression through technology. To this end, what is necessary is democratic education that recognizes the unique contexts in which students become …

Challenges In Education: A Deweyan Assessment Of Ai Technologies In The Classroom, Ande Eitner

Education and Culture

Artificial intelligence is profoundly transforming the world in various spheres and already finding its way into educational institutions. This essay aims to examine whether the Deweyan ideal of education can be achieved through such digital means. By analyzing how both the aims and means of education, as defined by Dewey, can be understood in the context of learning with artificial intelligence, the inherent differences of both educational approaches are brought out. It becomes apparent that important concepts that characterize successful education for Dewey, such as intrinsic inquiry, experience-based schooling, and thinking as the method for learning, do not go hand …

Editor's Note, Jessica Heybach

Education and Culture

No abstract provided.

Transtrauma: Conceptualizing The Lived Experiences Of Vietnamese American Youth, Khánh Lê

Journal of Southeast Asian American Education and Advancement

Drawing on empirical data from qualitative research I conducted with eight Vietnamese American youth in the Fall of 2020, this paper forwards transtrauma, a new framework for conceptualizing and understanding the lived experiences of Vietnamese American youth. The concept of transtrauma goes beyond the pathologizing of individual trauma, to examine how structures of domination inflict and extend trauma in marginalized communities, such as that of Vietnamese American communities. Transtrauma transcends the overt and linear focus on trauma as a single experience and the examination of how institutionalized violence by nation states shapes the experiences of Vietnamese Americans. This conceptualization …

Reviews Of The Shared Room And The Most Beautiful Thing, Bao Diep

Journal of Southeast Asian American Education and Advancement

Grief and Loss are often seen as taboo subjects to discuss openly in many cultures. However, grief is universal, perpetual, and complex. Grief can take many forms and depend on the nature of the attachment between the survivor and the dead (people, animals, living things). When Loss happens, the survivor’s attachment will influence the shape and level of grief. Kao Kalia Yang (2020) has brought the topic of attachment, grief and loss to her children’s books, The Shared Room and The Most Beautiful Things, to initiate this difficult conversation.

Review Of Afterparties Stories By Anthony Veasna So, Allan Zheng

Journal of Southeast Asian American Education and Advancement

You’re Khmer, right?” Tevy, one of So’s characters from “Three Women of Chuck’s Donuts,” asks a customer (So, 2021, p. 21). Khmer is commonly seen as an ethnic identity and distinct from the broader national identity of Cambodian. Therefore, what does it mean to be Khmer, or generally as I will write in this review, Cambodian American? In his short story collection Afterparties (2021), Anthony Veasna So explores this question in Afterparties (2021) through a rich collage of stories featuring sisters in a donut shop, a cynical high school literature teacher, a reluctant son at the temple to tver bon, …

Notes To My Dad, Karen Vang

Journal of Southeast Asian American Education and Advancement

This is a critical reflection of my experience navigating higher education as a Hmong woman. My dad is well known among our clan to be very “traditional” and respectable. However, over the past 6 years during my graduate studies, my dad has remained my number one supporter. I sometimes, I tell him he is the chosen one, to derail his beliefs. At times, I begin to imagine what life would be like if I were a son. As for me, one of my mentors told me one time, that it is my sacred path to do this work. I have …

Morphology Engineering Of Hybrid Supercapacitor Electrodes From Hierarchical Stem-Like Carbon Networks With Flower-Like Mos2 Structures, Jaehoon Ji, Sewon Park, Jong Hyun Choi

Purdue University Libraries Open Access Publishing Fund

There is a critical need to develop high-performance supercapacitors that can complement and even rival batteries for energy storage. This work introduces a strategy to drastically enhance the energy storage performance of a supercapacitor by engineering electrode morphologies with ternary composites offering distinct benefits for the energy storage application. The electrodes were fabricated with conductive networks of carbon nanotubes (CNTs) coated with a zeolitic imidazole framework (ZIF) for high ion diffusivity and ion-accumulating molybdenum disulfide (MoS2) with various morphologies. These include flower-like (fMoS2), stacked-plate (pMoS2), and exfoliated-flake (eMoS2) structures from topochemical synthesis. CNT-ZIF-fMoS2 demonstrates an excellent energy density, reaching almost …

An Ethical Framework For Library Publishing Version 2.0, Tina Baich, Nina Collins, Jaime Ding, Abigail Gulya, Zoe Wake Hyde, Bernadette A. Lear, Joshua Neds-Fox, Charlotte Roh, Melanie Schlosser, Kate Shuttleworth, Christine Turner

LPC Publications

Conceived at the Library Publishing Forum in 2017, the Ethical Framework for Library Publishing was a first-of-its-kind document for the LPC and the library publishing community. But remarkable social upheaval in the ensuing years, along with the continued maturation of our discipline, prompted the LPC to convene a task force to update the Framework for our current environment. What the task force developed, to our surprise, looks very little like the original document. An Ethical Framework for Library Publishing Version 2.0 is a true framework to help library publishers set an ethical baseline for their programs and activities. Consisting of …

High Efficiency Heat Pump Industrial Drying With Water Vapor-Selective Membranes, Andrew Fix, James E. Braun, David M. Warsinger

School of Mechanical Engineering Faculty Publications

Convective drying processes consume a significant amount of energy within the industrial sector. Heat pump-based drying processes are gaining attention as a potential technology for enabling efficient, electricity-driven drying for various applications. In this work, we propose a new heat pump drying system concept that employs water vapor-selective membranes for active control of the air humidity in drying processes, termed the MemDry system. We developed system-level models for the MemDry and representative baseline systems based on the first and second laws of thermodynamics to explore energy trends and limitations of the concept. It was found that energy savings on the …

The Discipline Of Information Literacy: Revitalizing The Conversation On Your Campus, Clarence Maybee, Karen Kaufman

Libraries Faculty and Staff Scholarship and Research

This presentation is an overview to viewing information literacy as a discipline. The presentation is comprised of a background of information literacy as a discipline, elements of a discipline, and the disciplinary elements of information literacy. It concludes with a brief overview of teaching IL using the disciplinary lens.

Global-To-Local-To-Global Interactions And Climate Change, Uris Baldos, Maksym Chepeliev, Brian Cultice, Matthew Huber, Sisi Meng, Alex C. Ruane, Shellye Suttles, Dominique Van Der Mensbrugghe

Department of Agricultural Economics Faculty Publications

Climate change by its very nature epitomizes the necessity and usefulness of the global-to-local-to-global (GLG) paradigm. It is a global problem with the potential to affect local communities and ecosystems. Accumulation of local impacts and responses to climate change feeds back to regional and global systems creating feedback loops. Understanding these complex impacts and interactions is key to developing more resilient adaptation measures and designing more efficient mitigation policies. To this date, however, GLG interactions have not yet been an integrative part of the decision-support toolkit. The typical approach either traces the impacts of global action on the local level …

Environment Knowledge-Driven Generic Models To Detect Coughs From Audio Recordings, Sudip Vhaduri, Sayanton V. Dibbo, Yugyeong Kim

Computer Information Technology Faculty Publications

Goal: Millions of people are dying due to res- piratory diseases, such as COVID-19 and asthma, which are often characterized by some common symptoms, including coughing. Therefore, objective reporting of cough symp- toms utilizing environment-adaptive machine-learning models with microphone sensing can directly contribute to respiratory disease diagnosis and patient care. Methods: In this work, we present three generic modeling approaches – unguided, semi-guided, and guided approaches consid- ering three potential scenarios, i.e., when a user has no prior knowledge, some knowledge, and detailed knowledge about the environments, respectively. Results: From detailed analysis with three datasets, we find that guided models …

Factors Associated With Handwashing Behaviors During The Covid-19 Pandemic: An Analysis Of The Community Health Survey In Korea, Soojung Jo, Soo-Yeon Han, Nancy Howe

School of Nursing Faculty Publications

Introduction: Handwashing is the most effective preventive behavior for coronavirus disease-19 (COVID-19) infection. However, research has shown the lower handwashing behaviors among Korean adults. Objectives: This study aims to analyze factors associated with handwashing as a preventive behavior for COVID-19 infection based on the health belief model (HBM) and the theory of planned behavior (TPB) behavioral theories. Methods: This secondary data analysis utilized the Community Health Survey developed by Disease Control and Prevention Agency conducted in 2020. Sampling method was stratified and targeted 900 people living in the territory of each community public health center. In total, 228,344 cases were …